Lets say you have some heterogeneous repeater, some fields may contain input, other's just a value to show.
definition: (don't forget the fd:new id="myclass", I don't mention them here explicitly, but you do want to create an instance of course)
<fd:class id="myclass">
<fd:widgets>
<!-- make sure to use a field widget with a selection list for the 'case' widget of the following union -->
<fd:field id="input_type">
<fd:datatype base="string"/>
<fd:selection-list>
<fd:item value="no_input"> <!-- the value is the id of a struct below, this will make that struct visible if chosen -->
<fd:label>No input</fd:label> <!-- label not really needed if the select-widget isn't shown to user-->
</fd:item>
<fd:item value="input">
<fd:label>Input</fd:label>
</fd:item>
</fd:selection-list>
</fd:field>
<fd:union case="input_type" default="no_input" id="input_union">
<fd:widgets>
<fd:struct id="no_input"> <!-- Notice the same id as above in the selection, this struct will simply show the field-->
<fd:widgets>
<fd:output id="some_output_field">
<fd:datatype base="string"/>
</fd:output>
</fd:widgets>
</fd:struct>
<fd:struct id="input">
<fd:widgets>
<fd:field id="some_input_field"><!-- this will give an input field to change the value-->
<fd:datatype base="string"/>
</fd:field>
</fd:widgets>
</fd:struct>
</fd:widgets>
</fd:union>
</fd:widgets>
</fd:class>
your template may look like:
<ft:class id="myclass">
<ft:widget id="input_type"><fi:styling type="hidden"/></ft:widget> <!-- I set the selection widget hidden, I want the source xml document data to make the choice-->
<ft:union id="input_union">
<ft:case id="no_input">
<ft:struct id="no_input">
<ft:widget id="some_output_field"/> <!-- non editable-->
</ft:case>
<ft:case id="input">
<ft:struct id="input">
<ft:widget id="some_input_id"/><!-- edit field-->
</ft:struct>
</ft:case>
</ft:union>
</ft:class>
let the binding field take care of the selection:
<fb:class id="myclass">
<fb:javascript id="input_type" path="." direction="load">
<fb:load-form>
var tmp = jxpathContext.getValue("@user_changable");
if (tmp != null)
{
var userChangable = new java.lang.String(tmp);
if (userChangable.equals("yes")) {
widget.setValue("input");
} else {
widget.setValue("no_input");
}
}
</fb:load-form>
</fb:javascript>
<fb:union id="input_union" path=".">
<fb:case id="no_input" path=".">
<fb:struct id="no_input" path=".">
<fb:value id="some_output_field"/>
</fb:struct>
</fb:case>
<fb:case id="input" path=".">
<fb:struct id="input" path=".">
<fb:value id="some_input_field" path="."/>
</fb:struct>
</fb:case>
</fb:union>
</fb:class>
This may bind the xml data if you create a repeater which has an instance of the class:
<some_list><!-- repeater parent path-->
<item user_changable="yes">valueA</item><!-- surround (for this example) the fb:new with a fb:context path="item", so that the class works on "item, @user_changable and the containing textnode-->
<item user_changable="no">valueB</item>
</some_list>
this will give an input field with valueA and an output field for valueB
Hope I minimized the typo's, it's a long bit of code ;-)
Kind Regards, Jan
Stephane Delort wrote:
Hi,
well I can, now, access to the object in class, struct or union in my flowscript (see previous thread).
but then, the shame is that it does not display the form and I have a "nullpointer exception" error instead.
In my defintion file I have :
****************************** <...> <fd:widgets>
<fd:union id="start" default="" case="widget-id"> <fd:datatype base="string"/> <fd:widgets> <fd:new id="widgetClass"/> </fd:widgets> </fd:union>
<fd:class id="widgetClass"> <fd:widgets> <fd:repeater id="inList" > <fd:widgets> <fd:union id="union" case="widget-id"> <fd:datatype base="string"/> <fd:widgets> <fd:struct id="simpleList"> <fd:widgets> <fd:multivaluefield id="list">
<....>
In fill the field thanks to the followwing flowscript :
******************************************************** ....... var myRepeater = form.lookupWidget("start").lookupWidget("inList"); var row = myRepeater.addRow(); var myUnion = row.lookupWidget("union"); var myDesiredStruct = myUnion.lookupWidget("simpleList"); var myList = myDesiredStruct.lookupWidget("list"); myList.setSelectionList( c, "listId", "label" ); //c is an ArrayList (collection).
....
then, finally here is the *template file which get me into troubles *;
************************************************************************* <...> <ft:union id="start"> <ft:case id="widgetClass"> // if I put this block in comments, the form is not display but I do not have any exception <ft:new id="widgetClass"/> </ft:case> </ft:union>
<ft:class id="widgetClass"> <ft:repeater-widget id="inList"> <ft:union id="union">
<ft:case id="simpleList"> <ft:struct id="simpleList"> <ft:widget id="list"> <fi:styling list-type="checkbox"/> </ft:widget> </ft:struct>
<...>
Anyway, it appears that I can fill any field of any structure belonging to my union id="union" thanks to the lookupwidget function. So, in this case how doesthe union make the selection to know which structure is to be displayed ?
Thanks in advance for any help,
Stephane
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